We'll get into blogs and what they are at a different point in this tutorial. This mention of blogs is about utilizing them to increase the amount of content on your site.

The idea is pretty simple. Get a good blog going about your market or topic of interest, and get people visiting it and adding comments to your original articles and entries.

These additional comments, sometimes quite lengthy and informative, become the property of your site, and exist there for a long time (until you delete it). They in turn get indexed by the engines. This is an ingenious way to increase the content of website. On top of that, it's fresh idea, discussions, disputes, perhaps review that are incredibly valuable to your users.